hihellobyw hihellobyw
  • 14-09-2021
  • Mathematics
contestada

9x^2 - 12 = 87
what’s confusing me is the ^2 how do i get pass that

Respuesta :

Аноним Аноним
  • 14-09-2021

Answer:

^2 on a number means you times the number by itself. You would change 9x^2 to 81x

Step-by-step explanation:

Answer Link
mistressofdark
mistressofdark mistressofdark
  • 14-09-2021

Answer:

x = √11

Step-by-step explanation:

9x² - 12 = 87

=> 9x² = 87 + 12

=> 9x² = 99

=> x² = 99/9

=> x² = 11

=> x = √11

=> x = 3.3 [approximately]

Answer Link

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